Podcast
Questions and Answers
What may cause sinus tachycardia?
What may cause sinus tachycardia?
What is the normal range for the heart rate in a normal sinus rhythm?
What is the normal range for the heart rate in a normal sinus rhythm?
What is the treatment for sinus bradycardia if no symptoms are present?
What is the treatment for sinus bradycardia if no symptoms are present?
What is the normal PR interval in both sinus tachycardia and sinus bradycardia?
What is the normal PR interval in both sinus tachycardia and sinus bradycardia?
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What may be used to treat sinus tachycardia caused by thyrotoxicosis?
What may be used to treat sinus tachycardia caused by thyrotoxicosis?
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Study Notes
Causes of Sinus Tachycardia
- Fever
- Infection
- Heart failure
- Dehydration
- Electrolyte imbalance
- Thyrotoxicosis
- Anxiety
- Pain
- Medications (e.g., beta-agonists, atropine)
Normal Heart Rate in Sinus Rhythm
- 60-100 beats per minute (bpm)
Treatment for Sinus Bradycardia
- No treatment necessary if no symptoms are present
- Monitor heart rate and adjust as needed
Normal PR Interval
- 120-200 milliseconds (ms) in both sinus tachycardia and sinus bradycardia
Treatment for Sinus Tachycardia Caused by Thyrotoxicosis
- Beta-blockers to control heart rate and symptoms
- Treatment of underlying thyrotoxicosis (e.g., radioactive iodine, medications, surgery)
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Description
Test your knowledge of cardiac dysrhythmias with this quiz. Identify normal sinus rhythm parameters and recognize dysrhythmias, such as sinus tachycardia, based on heart rate, rhythm, P waves, PR interval, and QRS complex characteristics.
